Andy Flower believes Ian Bell can form a more enduring partnership with Alastair Cook in one-day cricket than Kevin Pietersen managed, and take England through until the next World Cup in Australia in 2015.

After the announcement of a 14-man squad for three 50-over matches against West Indies, Flower confirmed that Bell, who had been overlooked for England's last series against Pakistan, will open the batting – and suggested that Pietersen may not have played in this series anyway.

"We believe he could form a successful opening partnership with Alastair Cook," said the England team director. "We don't want him to do a similar job to Pietersen. We want him to be Ian Bell and play great international one-day cricket."

Pietersen scored centuries in each of England's last two wins against Pakistan as they swept the series 4-0, before telling Flower last month that he no longer wants to be considered for the 50‑over team. That left England with a major headache, and they have opted to solve it by turning back to a 30-year-old who has played 108 ODIs but failed to do justice to his undeniable talent with an average of 34 and an equally modest strike rate of 73. "The World Cup in Australia was definitely on our mind," Flower said. "We had to weigh up whether to get someone younger than him in. But we think he's the best option for us."

"This might be the opportunity he needs to cement his place in the one-day side," said England's Test captain, Andrew Strauss, who stepped down from the 50-over team after the World Cup in India last year, and will now take a five-week break from international cricket, like Pietersen, until the start of the Test series against South Africa in mid-July. "To me he's one of the best players in the world and he can adjust to any form of the game."

However, both Bell and Cook have been omitted from the 13-man squad selected for a one-off Twenty20 International against West Indies at Trent Bridge on Sunday week. Cook, who will captain the 50-over team, had been widely tipped to return to the ranks under Stuart Broad as a t20 opener, with the England batting coach Graham Gooch recently backing him to perform in all forms of the game. But the selectors have instead stuck with the Nottinghamshire batsman Alex Hales, who would appear most likely to open with Craig Kieswetter.

James Anderson is another notable omission from the T20 squad, a blow to his hopes of earning a place in the team who will defend England's ICC World T20 title in Sri Lanka in September. Jade Dernbach, Steven Finn, Tim Bresnan and Broad are the four specialist fast-bowlers, with Hampshire's Danny Briggs offering a second spin option behind Graeme Swann.

Jonny Bairstow, Ravi Bopara, Eoin Morgan and Samit Patel are included in both squads, with Jonathan Trott making way in the T20 group for Somerset's Jos Buttler.

The West Indies wicketkeeper Denesh Ramdin was fined 20% of his match fee by the International Cricket Council referee Roshan Mahanama for displaying a written message to the former captain Viv Richards after reaching his century on Sunday. "It is important that we do not allow a precedent to be set with such a premeditated celebration by Mr Ramdin," said Mahanama. "We all understand the importance of celebrating a milestone, however, one should not use that time as an opportunity to hit out at one's critic or send messages to the world.

"I hope Mr Ramdin has learnt his lesson from this incident and that we will not see such behaviour by him or any player in the future when celebrating an achievement within a game of international cricket."